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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV
1474Microsoft CVEsreleased Tue 13 Oct 94Critical81 need an update · 13 fixed service-side 1Exploited in the wild
1Publicly disclosed
1In CISA KEV
256Revised since release

September 2026: 998 CVEs · 132 critical · 2 exploited · 2 in CISA KEV

Act first · October 2026

Exploited, KEV-listed, or publicly disclosed
CVE-2026-96951ImportantExploitedCISA KEV · due 16 OctSFBNetwork
Windows Shell Security Feature Bypass Vulnerability
CVSS 8.8 KB5126646KB5126651KB5126653+6
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update183
CVSS 8.1 · EPSS 1.4% KB5128895KB5128896KB5128897+1
CVSS 8.1 · EPSS 1.0% KB5126646KB5126651KB5126653+7
CVSS 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

262 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-83854 Windows Notification Information Disclosure VulnerabilityWindows Notification Important 5.50.3%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83864 Windows NTFS Information Disclosure VulnerabilityWindows NTFS Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+6
CVE-2026-83870 Windows Aggregated Data Platform Service Information Disclosure VulnerabilityWindows Aggregated Data Platform Service Important 5.50.4%Information DisclosureLocal
KB5127646KB5127648
CVE-2026-83875 Windows Human Interface Device Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83884 Windows Human Interface Device Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83887 HID Parser Library Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83892 Windows Human Interface Device Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83893 Windows Clipboard User Service Information Disclosure VulnerabilityWindows Clipboard User Service Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83898 HID Parser Library Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83904 HID Parser Library Information Disclosure VulnerabilityHID Parser Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83907 Windows Hello Information Disclosure VulnerabilityWindows Hello Important 5.50.9%Information DisclosureLocal
KB5126653KB5126657+2
CVE-2026-83933 Windows Update Orchestrator Service Information Disclosure VulnerabilityWindows Update Orchestrator Service Important 5.50.5%Information DisclosureLocal
KB5126646KB5126653+4

Advisories · October 2026

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 21:06 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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